Mongodb安装与基本用法

mkdir /usr/local/mongodb
mv mongo /usr/local/mongodb

mkdir -p /data/db

# 进入mongo目录 /usr/local/mongodb/mongo
./bin/mongod --dbpath=/data/db --rest
# 或
./bin/mongod -f /path/to/mongodb.conf

# 关闭mongo服务
./bin/mongod --shutdown -f /path/to/mongodb.conf

# 命令行
./mongo

# 选择数据库
use bs

# insert and query
db.users.insert({name:'bs'})
db.users.find()
db.users.count()

db.users.find({$or:[
... {username:'smith'},
... {username:'bs'}
... ]})

# update
db.users.update({username:'bs'}, {$set: {country:'china', age:55}})

# REPLACEMENT UPDATE
db.users.update({username:'bs'}, {age:66})
db.users.update({age:66}, {$set: {username:'bs'}})
db.users.update({username:'bs'}, {$unset: {age:1}})

db.users.find().pretty()


db.users.find({"favorites.movies": "Casablanca"})

#  Deleting data
db.foo.remove()
db.users.remove({"favorites.cities": "Cheyenne"})
db.users.drop()

import pymongo

myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["bs"]

Add(:a subject predicate object label .)
Delete(:d subject predicate object .)

# Select
graph.Vertex([nodeId],[nodeId]…) or g.V